Minut ur

Kode 

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, StdCtrls, DateUtils;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Timer1: TTimer;
    procedure Button1Click(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  startTidspunkt : Tdatetime;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  startTidspunkt := now();
  timer1.Enabled := true;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
var
  sekunder:integer;
  minutter:integer;
begin
  sekunder := SecondsBetween( now() , startTidspunkt );
  minutter := sekunder div 60;
  sekunder := sekunder mod 60;
  form1.caption:= inttostr(minutter)+':'+inttostr(sekunder);
end;

end.